Radiator-core



W. SACKREN.

RADIATOR CORE. APPLICATION FILED MAR 24, 1920.

1,393,042. Patented Oct. 11, 1921.

UNITED STATES FATENT OFFICE.

RADIATOR-CORE.

Specification of Letters Patent.

Patented Oct. 11, 1921.

Application filed March 24, 1920. Serial No. 368,386.

T 0 all whom it may concern:

Be it known that I, VVILLIAM Eli-column, citizen of the United States, and resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Radiator- Cores, of which the following is a specification.

This invention relates to radiators, and particularly to the kind advantageously en.- ployed for cooling heated fluids.

Such and similar devices are especially used in connection with water-cooled combustion engines, for providing a rapid giving-up or radiation of the heat absorbed by the water from the heated cylinders.

The primary objects of my invention are to provide a simple, inexpensive and highly eflicient heat-radiator composed of a plurality of radiator core units, having not only the advantage of readily permitting a substantial column of air to freely pass therethrough, but also reducing the number of core units, as compared with radiators used heretofore, while the reduction of its effective radiation surface is insignificant.

Another object of my invention is to provide an improved radiator unit which may be easily made from standard tubing in a very simple way and without requiring skilled labor, and which may be assembled in a far shorter time than present devices serving for similar purposes.

Still another object of my invention, in addition to the many advantages enumerated above, is to give a distinctive appearance to my radiators vastly different from the existing types.

The foregoing and further objects will be more fully apparent from the following description and the accompanying drawings, forming part of this specification, in which:

Figure 1 represents an elevation of a ra diator portion composed of units of one preferred form.

Fig. 2 is a similar View of a radiator portion composed of a combination of different unit types.

Fig. 3 is a top view of one preferred unit form.

Fig. l is an end view thereof.

Fig. 5 is a top view of a modified unit.

Fig. 6 is an end view thereof.

Fig. 7 is a sectionalview taken on line 77 of Fig. 3.

Fig. 8 is a sectional view taken on line 88 of Fig. 5.

Referring to the drawings, the ends 10 of the units represent a triangular arrangement of interconnected hexagonal shapes which may take the form of a closed clover, as indicated in Figs. 1, a and 7, or that of an open clover, as observed. in Figs. 2, 6 and 8.

The portion 11 between the unit ends receives generally a similar shape with the exception that its outer surface is rounded and comprises three substantially cylindrical, longitudinally interconnected tubes, joined together at valleys 12.

These core units are preferably made from a round standard tube, cut to proper length, the ends of which are fashioned in the way indicated.

Nhile forming the new shape of triangularly disposed three hexagons, which shape I shall call for short tri-hexagon shape, care is taken not to materially stretch the tube. The result is that the sum of the outer surface sides of the tri-hexagon in substantially equal to the circumference of the original tube-blank.

While shaping the ends in the aforementioned manner, the round portion between is simultaneously dented to produce either an open or closed clover shape of three cylindrical forms, depending upon the form of the ends, which shape I will call a tricylindrical one.

The shaping of the tri-hexagon ends from a tubular unit is done without stretching the ends thereof while the portion between the ends is reduced as to area from without. Thus contrary to heretofore used methods the unit is shaped, but not stretched at any of its portions, which eliminates'the possibility of the cracking of the core unit material due to slightly over-expanding it.

The compression operation is therefore preferable and the desired result of reducing the area of the middle portion of the unit, compared with the area of the ends, is obtained not only without weakening any portion of the blank, but on the contrary, retaining its natural strength.

It is obvious that the end spaces adjacent to headers 13,which naturally result from the arrangement of the core units may be filled by smaller, or different units as indicated in Fig. 2. The open clover-shaped units 14 are so arranged, that the spaces at the hottom of the headermay be filled once by a completely closed clover shape 15, or by a hexagon 16.

Similarly the left-out spaces seen in Fig. 1 may be filled by semi-hexagonal shapes not shown in the drawings.

While describing and illustrating preferred forms of my invention it is obvious that the triangular arrangement of the core unit may be changed and varied to any desired shape and I reserve for myself all right to make such changes, alterations or improvements within the broad scope of my idea.

Having thus described my invention, 1 claim: 7

1. In a device of the character described, the combination of a plurality of tubes of substantially clover-shaped form, each tube having enlarged ends forming a combination of three hexagons, said ends, forming a homogeneous part of said tube, adapted to be united to the enlarged tri-hexagon ends of the adjacent tubes, the substantially clover-shaped portion of said tubes between their ends being of smaller cross-sectional area than the ends, thus forming a circula tion space around the tubes.

2. In a device of the class described, the combination of aplurality of tubes, each tube comprising a triangular combination of three interconnected cylindrical shapes terminating at both ends in an enlarged triangular combination of interconnected hexagons, the fiat faces of said'triangulan hexagon shaped endsbeing united to the ends of the adjacent tubes, the area of said tubes between their ends being smaller than their end area, thus providing a circulation space around the tri-cylindrical tube portions.

3. In a device of the character described, the combination of a plurality of substan ,tially tri-cylindrical tubes having enlarged ends of a triangular combination of hexagons, said. enlarged ends being united at their faces, thus leaving circulating spaces around each tube-portion located between the united ends.

4. In device of the character describe comprising a plurality of tubes, each tube having ends forming a triangular arrangement of hexagon shapes, the fiat faces of which are united with the flat faces of similar ends of adjacent tubes, the portion of each tube between its ends comprising a triangular arrangement of cylindrical shapes, formed from single cylindrical tube, of smaller area than the end areas, thus providing a circulation-space around each tube.

5. In a radiator comprising a plurality of parallel tubes having enlarged ends of triangularily arranged hexagonal shapes, said tubes being united at their flat faced ends, the tube portions between the ends, forming a clover shaped cylindrical combination, being of smaller area than the end area of the tubesfthus forming a circulating space around each individual tube.

6. A radiator comprising a plurality of parallel radiator core units having enlarged ends forming a triangular combination of hexagonal shapes, the flat faces of which being directly united, the portion of each core unit between its spread ends being made from a single cylindrical tube and shaped to form a triangular combination of three smaller cylinders, being of less cross-sectional area than the ends, thus providing a circulating space around each individual core unit.

7. A radiator comprising a plurality of parallel tri-cylindrical radiator core units having expanded tri-hexagonal shaped ends, said ends being united with each other, the' spaces between the non-expanded core-portions facilitating the free circulation of liquid around said portions.

8. In a radiator, a radiator core unit made from a round tube, the ends of which form a triangular combination of three hexagons the sum of-the contact-sides of which is substantially equal to the circumference of said tube, the portion between its tri-hexagonal ends forming a triangular combination of three substantially cylindrically shaped tube-segments, to which form said round tube between its end is forced, thus causing an ofisetting and a subsequent reduction of said portion in relation to its ends.

9. In a radiator, a radiator core unit made from a round tube, forced to a reduced tricylindrically shaped center portion and trihexagonally shaped ends of substantially the same periphery as the circumference of said tube.

10. A radiator, comprising a plurality of radiator core units of a generally triangular shape, each core unit having hexagonal contact ends, united with contact ends of the adjacent core units, and a reduced portion between its ends to provide space between said core unit and the reduced portions of the adjacent core units.

Signed at New York city, in the county of New York, and State of New York, this 28 day of February, A. D. 1920.

WILLIAM SACKREN. 

